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LAFORGE & CRANE.

, Heating Stove.

No. 102,558. Patented May 3, 1870.

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JOEL LAFORGE AND JONATHAN T. CRANE, OF RAHWAY, NEW JERSEY.

Letters Patent No. 102,558, dated my 3, 1870; antedated April 18, 1870.

COAL-STOVE.

The Schedule referred to in these Letters Patent and making pan: of the same.

- 111.91 T. CRANE, of, Rahway, in the county of Union and State of New Jersey, have invented a new and 'improved'Rad-iating and Air-heating Stove; and we do'her'ehy declare that the following is a full, clear, and exact description of the same, reference being had tothe accompanying drawings and to the letters of reference marked thereon making a part of this specification.

This invention relates to new and impro ed stove, by which heat is diffused by direct radiation,and also by the emission of heated air, the device being a combined radiating and air-heating stove.

One great diifioulty hitherto encountered in constructing a stove of this class has been the rapid burning out of the air-heating pipes, the same being necessarily exposed'to ahigh degree of heat. Another difiicnlty has been constructing such a stove, or arranging the several parts of the same, in such a manner as to obtain a portable device, or one which will not monopolize much space, and capable of being manufactured at a reasonable cost. These difiiculties have, it is believed, been fully overcome by our invention.

In the accompanying sheet of drawings- Figure'l represents a vertical central section of our invention.

Figure 2, a horizontal section of thesame, taken in the line 2:24;, fig. 1.

Similar letters of reference indicate corresponding parts in the two figures.

. To enable those skilled in the art to fully understand and construct our invention, we will proceed to describe it. p

A represents the base of the stove, on which is the ash-chamber B". This base is cast with a flange, a, over which the bottom part I) of the body-B of the stove is fitted, (see fig. 1.) The body B may be of cylindrical formthat probably would be the preferable shape--and it is made with two walls, 0 c, with a space, ,0, of requisite width between, which space, under certain conditions, is made to serve as a flue, as will be presently explained. This flue or space 0 is closed both at top and bottom, but the top of the space within the body B has a perforated or open cover, D, which rests on the top of the walls c c, as shown in fig. 1.-

E is the fire-chamber, provided at its bottom with a grate, F, which maybe hung on journals. This fire-chamber is surrounded bya series of vertical tubes, 11, arranged at equal distances apart, and communicating at their lower ends. with the base A, the bottom plate of which has openings a, to admit the external air, said openings being at theonter side of the ashchamber B", (see fig. 1.) Theupperends of the tubes at communicate with the u-pper'part of the interior of B, and said tubes are encompassed by acase, e.

l Between this case 0 and the inner wall 0 of the body B, there is-a space, 6", which extends all around the fire-chamber, and communicates with the hollow base A below by means of openings f, (see fig. 2.)

In the upper part of the space within the body B, there is placed and secured permanently, an annular chamber, G, which communicates with the fire-chamber E- by a series of vertical tubes, g1

This chamber communicates with the space or flue G by two horizontal pipes, h i, one of which, it, enters 0 just above the smoke-pipe H, the other, 'i, enters O at a point directly opposite where hentcrs, as shown in fig. 1.

I is the door, through which the fire-chamber is supplied with fuel, and

J is the' door by which access is bad to the ashcharnber B"- The pipe 72 is provided with a damper, j.

The operation is as follows:

When 'a'direct draughtis required as, for instance, in kindling a fire, the damper j in pipeh is opened, and the products of combustion from the fire-chainber pass up'into the chamber G, and thence through pipe 71- direct into the smoke-pipe H, as indicated by the red arrows in fig. 1.

When a circuitous or indirectdranght is required,

' the damper j is closed, and the products of combustion passfrom the ohamberG, through pipe 1', into the. flue or space '0, between the walls 0 c of the body B, and down around said flue and up into pipe H, as indicated by the black arrows in fig. 1. p

In this last adjustment of the damper j, the stove is converted into what generally termed a radiator.

The tubes d are air-heating ones, the cold air enter ,iug their lower ends from the hollow base A, and

passing up through the central passage 7.- of the chamber G, and thence through the perforated cover D,

the air, during this passage, becoming thoroughly heated, and preventing the tubes (1 from being burned, as said air absorbs the heat. At the same time, a current of cold air is passing up through the space cbctween the case e and the inner wall 0 of the body B, and, becoming thereby heated, passes from the upper part of the stove in the same way as that heated in the tubes d, (see dotted black arrows, fig. 1.). These two currents of air passing up, respectively, through the tubes d and the space 0", efiectually prevent the tubes (1 being injured by heat.

From the above description it will be seen that a radiating and air-heating stove is obtained within a limited space, that is to say, it may be constructed ofquite moderate dimensions, at" a reasonable cost, opcrate efliciently, capable of general application, either as a radiator or an air-heater, or both, for, by havin a close eoven-I), and a pipe leading'therefrom, hcate air may be conveyed to other apartments than thatin. Also, the vertical tubes d, in combination with the which the stove is placed. 7 chamber G, pipes h 'i, air-heating passage 0", and the Having thus described our invention, flue 0 between the walls a c of the body B, all ar- What weciaim as new, and desire to secure by Letranged substantially in the manner as and for the purters Patent, is-- I pose set forth.

The vertical air-heating tubes d, when placed JOEL LAFORGE.

around the fire-chamber E, and arranged'so as to re- J. T. CRANE.

ceive cold air at their lower ends, in connect-ion with the air-heating space or passage 0", which surrounds Witnesses: the case a inclosing the tubes d, all arranged substan- A. R. HAIGHT, tialiy as shown and described. J. W. J AOKSON. 

